In-Situ Visualization of Generated Gas Distribution in An Operating Direct Hydrazine Hydrate Fuel Cell By Soft X-Ray Radiography

Direct liquid fuel cells, such as the methanol, ethanol, borohydride, formic acid and hydrazine hydrate systems, are attractive candidates for portable electronics and vehicular applications, because of their high energy density. Direct hydrazine hydrate fuel cells (DHFCs) have been studied since the 1960s. DHFCs can be operated without any previous metal catalyst, which potentially contributes to cost reduction of the system. Recent developments in DHFCs technology have led to full-sized demonstration DHFCs indicating their feasibility and promise in future fuel cell vehicles. In DHFCs, electrochemical reactions take place in the anode and the cathode, respectively.